Furnace.



A. 1.. YATES.

FURNACE.

- APPLICATION rum) MAR. 26. 1908.

Patented Apr. 27, 1909.

ZNVENTOR Adar/Icy fm: mums PET RS cm, WASHINGTON, n. c.

ABRAHAM L. YA'rns, or NIAGARA FAnLsNnw YORK.

FURNACE.

. Specification of Letters Patent.

Patent ed. April 27, 1909.

Application filedfiarch 25,1908. seria n s malee.

To all whom it may concern:

Be it known that I, ABRAHAM L. YATEs, a citizen of the United States, residing at Niagara Falls, in the county of Niagaraand State of New York, have invented-certain new and useful Improvements in Furnaces; and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enable ot ers skilled in the art to which it appertains to make and use the same.

This invention relates to-heating-furnaces; and it consists in the novel construction and combination of the arts hereinafter fully described and claimed a In the drawings, Figure 1 is a plan view of the furnace with the cover removed. Fig. 2 is a partial vertical section, taken on the ine :ra: in Fig. 1. portion of the front plate and the outer casing, showing their connection. Fig. 4 is a cross-section taken on the line yy in Fig. 3.

A is a portion of the fire-pot ofa furnace, of any a proved construction provided with an ann ar groove 0/ in its top edge.

B is a radiator drum provided with a tubular stem 1) on its bottom which fits into the groove a.

C is the firing opening at the front of the radiator drum, and D is the smoke-outlet at the back of the drum.

E is an outer air-passage or chamber which extends vertically through the radiator drum, and which extends across the smoke-outlet D but not across the firing-opening O. F are two inner airassages or I chambers which extend vertica y through the radiator drum, and which are arranged adjacent to the fire-pot. A smoke-space f is formed between the rear ends f of the passages F, and a firing-space g is formed between'their front ends it opposite the firing-opening C. All

these air-passages are arranged concentric.

with the radiator drum and fire-pot.

G are curved flue-plates provided with hinges h by means of which they are connected to the front ends it of the passages F. These flue-plates are formed of spring metal and their free end portions engage. with the periphery of the radiator drum so that they are smoke-tight without'catches or fastenings.

The direction of the smoke and products of combustion is shown by the arrows in Fig.

1, passing first from the fire-pot through the smoke-space f, thence through the two Fig. 3 is a front view of a smoke passages 3-between the air-passages E and F, through the spaces 4 between the flue-plates G "andthe' ends e of the outer air- -passage E, and around the s ace 5 between the air passag'eE and the shel of the radiator drum, to the smoke-outlet D.

The fuel is shoveled into the fire-pot through the s ace between the flue-plates G and the ends of the air-passages F.

I is the top of the radiator drum which closes the smoke-passages and the space over the fire-pot. This top I and the bottom '11 of the radiator drum are provided with openings corresponding to the air-passages E and F so that the air may be heated in its upward passage through the said air-passages.

This arrangement affords a very eflicient heating apparatus, and the hinged flue-plates G afiord a means for cleaning out the smokepassages, suitable cleaning implements being introduced throu h the firing-opening.

' J is the frontate of the furnace, and j is the outer casing which extends around the radiator drum and fire-pot, and which forms an air passage 3' between itself and the said parts.

K are radial flanges near the edges of the front-plate, and 7c are angle-shaped plates on the ends of the'casing 7 which overlap the side edges of the said front-plate.

L are bolts for securing the parts K and k together and drawing up the sheet metal of the casing.

M is a trough-shaped guard which extends the full height of the casing, and which is slilpped over the bolts L and the parts K and The guard M has a hooked lu m at its bottom whichsli s under the partsdi and 7c, and n is "a straig t lug at the top of the guard which comes over the said parts. A pin it is slipped through a hole in the lug n and engages with the front plate J so that the'guard is held in place.

What I claim is: g I

1. 'In a heating-furnace, the combination, with a radiator-drum provided at its bottom with an inletopening for the roducts of combustion, and having a smo e-outlet at its rear and a fuel-opening at its front; of an outer chamber arranged between the bottom and top of the said drum and extending across the said smoke-outlet but not across the said fuel-opening, said outer chamber forming a passage for air and a fuel-space, two inner chambers extending between the bottom and top of the said drum and afl'ording two more passages for air, a smoke-passage and a fuel-space being also formed between the end portions of the said inner chambers at the rear and front of the drum, and curved flue-plates of spring metal hinged to the front end portions of the said inner chambers with their free end portions held in engagement by frictional contact with the periphery of the said drum and forming connecting smoke-passages substantially as set forth.

2. In a heating furnace, the combination, with a radiator drum, of a front-plate provided with a flange near its side edge which projects radially of the said drum, an outer casing which encircles the said drum and which has an angle-shaped plate on one end, bolts connecting the said plate and radial flange, and a trough-shaped guard covering the said bolts, plate and flange and provided with means for securing it in position.

In testimony whereof I have aihxed my signature in the presence of two witnesses.

ABRAHAM L. YATES.

Witnesses HERBERT W. T. JENNER, JOHN L. FLETCHER. 

